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CBSE 8 | Science – Study – Free
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COMPONENTS OF FOOD | Study
Pre-Requisires Test & Enrich Components of Food | Speed Notes Notes For Quick Coverage Nutrients: Food substances that provide nourishment to the body are called nutrients. The major nutrients in our food are carbohydrates, proteins, fats, vitamins and minerals. In addition, food also contains dietary fibres and water. Carbohydrates and fats mainly provide energy to…
SORTING MATERIALS INTO GROUPS | Study
Pre-Requisires Test & Enrich Sorting Material into Groups | Speed Notes Notes For Quick Coverage Material: A material is a substance which is used for making things. A given material could be used to make a large number of objects. It is also possible that an object could be made of a single material or…
SEPARATION OF SUBSTANCES | Study
Pre-Requisires Test & Enrich Separation of Substances | Speed Notes Notes For Quick Coverage Study Tools Audio, Visual & Digital Content PURE SUBSTANCES: The substances which contain only one kind of particles are called pure substances. Elements and compounds are pure substances. ELEMENT: A substance made from identical particles of one material. COMPOUND: A substance…
GETTING TO KNOW PLANTS | Study
Pre-Requisires Test & Enrich Getting to know Plants | Speed Notes Notes For Quick Coverage Plants are usually grouped into herbs, shrubs, trees, creepers and climbers. From where does a plant come?A plant comes from a seed. A seed is covered with seed coats.,The seed coats protect the seed. The seed has a baby plant…
BODY MOVEMENTS | Study
Pre-Requisires Test & Enrich Body Movements | Speed Notes Notes For Quick Coverage Locomotion in the human body:(i) Human skeleton: It forms a framework that gives shape and support to the body. It consists of 206 bones. It protects internal organs. (Scroll down to Continue …) Study Tools Audio, Visual & Digital Content Locomotion: Movement…
THE LIVING ORGANISMS — CHARACTERISTICS AND HABITATS | Study
Pre-Requisires Test & Enrich The Living Organisms and Their Surroundings | Speed Notes Notes For Quick Recap The surroundings where plants and animals live are called their habitat. Several kinds of plants and animals may share the same habitat. The presence of specific features and habits, which enable a plant or an animal to live…
MOTION AND MEASUREMENT OF DISTANCES | Study
Pre-Requisires Test & Enrich Motion and Measurement of Distances | Speed Notes Notes For Quick Recap Study Tools Audio, Visual & Digital Content REST: The objects which remain stationary at a place and do not change their position are said to be at rest. Different modes of transport are used to go from one place…
LIGHT, SHADOWS AND REFLECTIONS | Study
Pre-Requisires Test & Enrich LIGHT | Speed Notes Notes For Quick Recap Light is the natural agent that stimulates sight and makes things visible. Its path is only visible when it is scattered by dust particles present in the atmosphere. Light is a form of invisible energy. Light itsel is not visible . It makes…
ELECTRICITY AND CIRCUITS | Study
Pre-Requisires Test & Enrich Electricity | Speed Notes Notes For Quick Recap Electric Circuit: Connecting wires, bulb, switch and electric cell is used in Torch, Battery, LED (Light Emitting Diode), etc. Electric current is carried by Conductor. Conductor: Materials that allow electic current to pass through them. All metals are good conductors of electricity. Carbon…
FUN WITH MAGNETS | Study
Pre-Requisires Test & Enrich FUN WITH MAGNETS | Speed Notes Notes For Quick Recap Magnets: Materials that attract iron, nickel and cobalt. Natural magnet is called Iodestone or magnetite. Magnetite is a natural magnet. Magnet attracts materials like iron, nickel, cobalt. These are called magnetic materials. Materials that are not attracted towards magnet are called…
AIR AROUND US | Study
Pre-Requisires Test & Enrich Air Around Us | Speed Notes Notes For Quick Recap Air: The invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. The blanket of air that surround the earth is called atmosphere. Air is found everywhere. We cannot see air, but we can feel it. Air in…
CBSE 6 | Science – Study – Free
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Motion and Time | Study
Pre-Requisires Test & Enrich Motion and Time | Speed Notes Notes For Quick Recap Motion: The action or process of moving or being moved. The distance moved by an object in a unit time is called its speed. Speed of objects help us to decide which one is moving faster than the other. The speed…
Electric Current and its Effects | Study
Pre-Requisires Test & Enrich Electric Current | Speed Notes Notes For Quick Recap Flow of electrons through a conductor. It is convenient to represent electric components by symbols. Using these, an electric circuit can be represented by a circuit diagram. When an electric current flows through a wire, the wire gets heated. It is the…
Light | Study
Pre-Requisires Test & Enrich Light | Speed Notes Notes For Quick Recap Light: It is the natural agent that stimulates sight and makes things visible. Light travels along straight line. Any polished or a shining surface acts as a mirror. An image which can be obtained on a screen is called a real image. (Scroll…
Forests: Our Lifeline | Study
Pre-Requisires Test & Enrich Forests: Our Lifeline | Speed Notes Notes For Quick Recap Forest: Large area of land thickly covered with trees, bushes, etc. We get various products from the forests around us. Forest is a system comprising various plants, animals and micro-organisms. In a forest, trees from the uppermost layer, followed by shrubs,…
Wastewater Story | Study
Pre-Requisires Test & Enrich Wastewater Story | Speed Notes Notes For Quick Recap Wastewater: Black-brown water which is rich in lather , mixed with oil that goes down the drains from skins, showers, toilets, laundries is called wastewater. sewage: Wastewater is generated in homes, industries, agricultural fields and in other human activities. This is called…
CBSE 7 | Science – Study – Free
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Nutrition in Plants | Study
Pre-Requisires Test & Enrich Speed Notes Notes For Quick Recap Nutrition: It is the mode of taking food by an organism and its utilization by the body. Nutrients: The components of food that provide nourishment to the body. All organisms take food and utilise it to get energy for the growth and maintenance of their…
Nutrition in Animals | Study
Pre-Requisires Test & Enrich Nutrition in Animals | Speed Notes Notes For Quick Recap Classification based on Eating Habits: Herbivorous: Animals that eat plants or plant products. Example: Cow, sheep, goat, deer, elephant, kangaroo, giraffe, etc. Carnivorous: Animals that eat only flesh of other animals. They never eat plants. Examples: Tiger, lizard, lion, etc. Omnivorous:…
Heat | Study
Pre-Requisires Test & Enrich Heat | Speed Notes Notes For Quick Recap Heat: It is a form of energy, which makes any object hot or cold. The materials which allow heat to pass through them easily are conductors of heat. The materials which do not allow heat to pass through them easily are called insulators.…
Acids, Bases and Salts | Study
Pre-Requisires Test & Enrich Acids, Bases and Salts | Speed Notes Notes For Quick Recap There are three types of Substances: Acids, Bases and Salts Acids: Acids are sour in taste. They are corrosive in nature. A concentrated acid cuts through clothes and eats away the wool. If it falls on the skin, it can…
Physical and Chemical Changes | Study
Pre-Requisires Test & Enrich Physical And Chemical Changes | Speed Notes Notes For Quick Recap Changes can be of two types, physical and chemical. Physical changes are changes in the physical properties of substances. Due to physical chages new substances are not formed. Physical changes may be reversible. Examples: crushing a can, glowing of an…